Nissan Xterra. Manual — part 46
AV-176
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
Is the fuse blown?
YES
>> Replace the blown fuse after repairing the affected circuit.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect audio amplifier connector B158.
3. Check voltage between audio amplifier connector B158 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connectors.
3.
CHECK GROUND CIRCUIT
Check continuity between audio amplifier connector B158 and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness or connectors.
Terminal No.
Signal name
Fuse No.
1
Battery power supply
17 (15A)
17
Audio amplifier
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
B158
1
—
Ignition switch: OFF
Battery voltage
17
Audio amplifier
Ground
Continuity
Connector
Terminal
B158
4
—
Yes
20
AV
FRONT DOOR SPEAKER
AV-177
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
FRONT DOOR SPEAKER
Diagnosis Procedure
INFOID:0000000009485303
Regarding Wiring Diagram information, refer to
.
1.
CONNECTOR CHECK
Check the AV control unit, audio amplifier and speaker connectors for the following:
• Proper connection
• Damage
• Disconnected or loose terminals
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair the terminals or connectors.
2.
CHECK FRONT DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY
1. Disconnect audio amplifier connector B159 and suspect front door speaker connector.
2. Check continuity between audio amplifier connector B159 and suspect front door speaker connector.
3. Check continuity between audio amplifier connector B159 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness or connectors.
3.
CHECK FRONT DOOR SPEAKER SIGNAL
1. Connect audio amplifier connector B159 and suspect front door speaker connector.
2. Turn ignition switch to ACC.
3. Push AV control unit POWER switch.
4. Check signal between the terminals of audio amplifier connector B159.
Audio amplifier
Front door speaker
Continuity
Connector
Terminal
Connector
Terminal
B159
15
D12 (LH)
1
Yes
31
2
16
D112 (RH)
1
32
2
Audio amplifier
Ground
Continuity
Connector
Terminal
B159
15
—
No
31
16
32
Audio amplifier connector B159
Condition
Reference value
(+)
(
−)
Terminal
Terminal
AV-178
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION]
FRONT DOOR SPEAKER
Is the inspection result normal?
YES
>> Replace front door speaker. Refer to
AV-221, "Removal and Installation"
NO
>> GO TO 4.
4.
CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY
1. Disconnect AV control unit connector M96 and audio amplifier connector B159.
2. Check continuity between AV control unit connector M96 and audio amplifier connector B159.
3. Check continuity between AV control unit connector M96 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness or connectors.
5.
CHECK PRE-AMP SIGNAL
1. Connect AV control unit connector M96 and audio amplifier connector B159.
2. Turn ignition switch to ACC.
3. Push AV control unit POWER switch.
4. Check signal between the terminals of AV control unit connector M96.
Is the inspection result normal?
15
31
Audio signal output
16
32
SKIA0177E
AV control unit
Audio amplifier
Continuity
Connector
Terminal
Connector
Terminal
M96
2
B159
22
Yes
3
6
11
21
12
5
AV control unit
Ground
Continuity
Connector
Terminal
M96
2
—
No
3
11
12
AV control unit connector M96
Condition
Reference value
(+)
(
−)
Terminal
Terminal
2
3
Audio signal output
11
12
SKIA0177E
AV
FRONT DOOR SPEAKER
AV-179
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
YES
>> Replace audio amplifier. Refer to
AV-219, "Removal and Installation"
.
NO
>> Replace AV control unit. Refer to
AV-218, "Removal and Installation"
.
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